package org.gp953.pay.utils;

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayTradePagePayRequest;
import org.gp953.pay.constants.AlipayConfig;
import org.gp953.pay.domain.AlipayInfo;
import org.gp953.pay.domain.PayBill;

public class AlipayUtils {
    public static String pay(AlipayInfo alipayInfo, PayBill payBill) {
        String result = null;
        try {
            //获得初始化的AlipayClient
            AlipayClient alipayClient = new DefaultAlipayClient(
                    AlipayConfig.gatewayUrl,
                    alipayInfo.getAppid(),
                    alipayInfo.getMerchant_private_key(),
                    "json",
                    AlipayConfig.charset,
                    alipayInfo.getAlipay_public_key(),
                    AlipayConfig.sign_type);

            //设置请求参数
            AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
            alipayRequest.setReturnUrl(AlipayConfig.return_url);
            alipayRequest.setNotifyUrl(AlipayConfig.notify_url);

            //商户订单号，商户网站订单系统中唯一订单号，必填
            String out_trade_no = new String(payBill.getUnionPaySn());
            //付款金额，必填
            String total_amount = new String(payBill.getMoney().toString());
            //订单名称，必填
            String subject = new String(payBill.getDigest());
            //商品描述，可空
            String body = new String(payBill.getDigest());

            alipayRequest.setBizContent("{\"out_trade_no\":\"" + out_trade_no + "\","
                    + "\"total_amount\":\"" + total_amount + "\","
                    + "\"subject\":\"" + subject + "\","
                    + "\"body\":\"" + body + "\","
                    + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");

            //请求
            result = alipayClient.pageExecute(alipayRequest).getBody();
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }

        //输出
        return result;
    }
}
